Fig. 7
From: The effects of emotional arousal on pupil size depend on luminance
Group results for IAPS colored. (a) Mean pupil size in the negative and neutral condition, collapsing across luminance. Each point on the graph represents an individual subject. Overall, larger pupil size was observed in the Negative condition than the Neutral condition. (b) Group-level mean pupillary light reflex functions for the Negative and Neutral condition, fit with the modified decrement Naka-Rushton function. Error bars represent SEM. (c) Tests at each luminance level for a significant difference between pupil size in the Negative and Neutral conditions. The shaded gray area represents the 95% confidence interval. (d) Bootstrapped distributions (2000 iterations) of the difference between Negative and Neutral parameter estimates for Pmin, L50 and Pmax. The dotted line indicates no difference in the Negative and Neutral parameter estimates. (e) Scatterplot of individual observer parameter estimates comparing Neutral versus Negative for Pmin (minimum pupil response), L50 (inflection point), and Pmax (maximum pupil response). The purple dot indicates the group-averaged parameter estimates, with the error bars indicating the SEM. The dotted line indicates the unity line of no difference in parameter estimates between the Negative and Neutral condition.
